SGF-194 Rewrote Subregion parsing in AbstractRegionParser
Merged pull request #29 from dturanski/SGF-194, fixing JIRA issue SGF-194 involving nested Regions (GemFire Sub-Regions).  Performed post pull request cleanup based on code review.  Added the setHostnameForClients method without the @Override annotation to the StubGatewayReceiverFactory test object based on the latest 7.0.1 GemFire artifact.